My classmate went to the central hospital for plastic surgery when he was a freshman. It's almost three years now. Basically, it has been corrected, and it can be removed before her senior year graduation. She spent 1000 yuan or so. Not expensive. The effect is really good. At first, her teeth were messy. They are all together now, and there is no tooth extraction. It doesn't hurt as much as some people correct it. She doesn't hurt at all, but she can't bite hard things and occasionally loses her teeth.